2 Marvell Device bus (localbus) configuration.
3 ============================================
5 1. Properties for localbus nodes
11 Value type: <prop-encoded-array> encoded as arbitrary number of localbus
14 Description: ranges property defines values used for mapping devices
15 connected to localbus, in Marvell devices it is used also for
16 setting decoding windows.
18 a) child node address-cells:
19 - first cell: number of bank (chip select)
20 - second cell: (Marvell devices) Target ID for decoding
23 b) parent node address cells:
24 - address offset: used with parent's node base address to
25 specify base address of mapped device
27 c) child node size-cells:
28 - size: defines amount of memory that should be reserved for
37 Description: The bank_count property defines maximum number of banks on
38 localbus node. Bank is most often interpreted as device chip
39 select, but may also describe another device (e.g. SPI flash).
46 compatible = "mrvl,lbc";
49 /* This reflects CPU decode windows setup. */
50 ranges = <0x0 0x2f 0xb2200000 0x00100000
51 0x1 0x3e 0xb2100000 0x00100000
52 0x2 0x3d 0xb0000000 0x02000000
53 0x3 0x3b 0xb2000000 0x00100000>;
56 2. Properties for localbus consumer nodes:
62 Value type: <prop-encoded-array>
64 Description: A standard property required for localbus child nodes. Defines
65 the device memory region.
67 a) first cell: number of bank (chip select)
69 b) address offset: used with address offset from parent's ranges
70 for corresponding bank to specify base address of
73 c) size: defines size of the device memory region
80 compatible = "cfi-flash";
81 reg = <0x0 0x0 0x00100000>;